Title:Synthesis of New Curcumin-like Pentadienones by O- and C-glycosylation
Volume: 23
Issue: 18
Author(s): Carolina P. Gonçalves*, Dirk Michalik*, Manuel Almeida, Anderson O. Ribeiro and José A. Quincoces
Affiliation:
- Center for Natural and Human Sciences, Federal University of ABC, Avenida do Estado 5001, 09210-580 Santo Andre,Brazil
- Institut für Chemie, Universität Rostock, Albert-Einstein-Straße 3a, 18059 Rostock,Germany
Keywords:
L-Rhamnose derivatives, D-Galactose derivatives, pentadienone, curcumin analogues, O-glycosylation, C-glycosylation.
Abstract: A new method for the preparation of three new curcumin analogues is described
by the connection of pentadienones to carbohydrate units. From L-Rhamnose and
D-Galactose, several functionalization reactions were performed to obtain the desired
sugar units. The sugars 8, 18 and 19, after obtained, were used as starting material for the
association with curcumin-derived pentadienones, thus giving rise to three new chalcones
9 by O-glycosylation, 22 and 23 C-glycosylation. The new compounds were characterized
by NMR and mass spectroscopy. The compounds obtained have high potential to exhibit
antitumor activity.